Allied EC1P Installation guide

Brand: Allied

Model: EC1P

Type: Installation guide

This manual is also suitable for

65821003 / 40228K016 Issue 1810 Page 1 of 6

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INSTALLATION INSTRUCTIONS

Evaporator Coil

65821003

*65821003*

Manufactured By

Allied Air Enterprises LLC

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

40228K016

These instructions must be read before any installation.

WARNING

Your safety and the safety of others are very important.

We have provided many important safety messages in

this manual and on your appliance. Always read and

obey all safety messages.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill

or hurt you and others.

All safety messages will follow the safety alert symbol

and signal word. These signal words mean the following:

DANGER

You can be killed or seriously injured

if you don’t immediately follow

instructions.

WARNING

Indicate a potentially hazardous

situation, which, if not avoided, could

result in death or serious injury.

CAUTION

Indicates a potentially hazardous

situation, which, if not avoided, may

result in minor or moderate injury.

Caution may also be used to alert

against unsafe practices.

NOTICE

Indicates a statement of company

policy as the message relates directly

or indirectly to the safety of personnel

or protection of property.

IMPORTANT

More detailed information concerning

the statement of company policy

as the message relates directly or

indirectly to the safety of personnel or

protection of property.

All safety messages will tell you what the potential

hazard is, tell you how to reduce the chance of injury,

and tell you what can happen if the instructions are not

followed.

65821003 / 40228K016Issue 1810Page 2 of 6

Installation

WARNING

Installation and servicing of air conditioning equipment

can be hazardous due to internal refrigerant pressure

and live electrical components. Only trained and

qualied service personnel should install or service

this equipment. Installation and service performed by

unqualied persons can result in property damage,

personal injury, or death.

General

Evaporator coils are designed for use with AC condensing

units or heat pump units. These instructions are intended

as a general guide and do not supersede local codes in

any way. Consult with local authorities having jurisdiction

before installation. This installation must comply with all

local and state laws as well as national electrical codes for

the U.S. or Canada where applicable.

Verify the efciency performance requirements, such

as SEER, EER, and/or HSPF, are appropriate with the

matched condensing or heat pump units. Check outdoor

unit manufacturer for proper line sizing.

WARNING

Coils are shipped with a 10 psi dry air holding charge.

Puncture rubber plug on suction line to release charge

before removing plugs. The absence of pressure does

not verify a leak. Check the coil for leaks before installing

or returning it to your wholesaler.

Inspection of Shipment

Before installation, inspect the coil for any shipping

damage. Notify the carrier or the distributor of any damaged

equipment; do not install a damaged coil.

WARNING

Before performing maintenance operations on system,

turn off all main power switches to indoor and outdoor

units. Turn off accessory heater power switch, if

applicable. Electrical shock could cause personal injury

or death.

Air Leakage

All indoor cabinets MUST be taped after installation to seal

against any air leaks. System performance and efciency

will be reduced if air leakage exists.

Air Filters

Properly-sized air lters MUST be installed on all return air

ducts. If air lters are not used or maintained regularly as

required, equipment damage can occur, system capacity

and efciency will be reduced and the warranty coverage

may be void.

Filter Dryer

A new lter dryer MUST be installed on all systems. The

lter dryer is typically shipped with the outdoor unit; if not,

add one. Do not install more than one lter dryer in the

system; it can reduce the system capacity and efciency.

Metering Device

The indoor coils are shipped with either a piston or

expansion valve (TXV) based on the coil model. The

selection of the metering device type and size must follow

the outdoor unit technical specication and the AHRI listing.

Pistons

The piston shipped with the indoor coil may not be the

correct size for the outdoor unit being installed. The

outdoor unit specication gives the correct size and the

correct piston is usually shipped with the outdoor unit.

To replace the piston with another piston, perform the

following procedure:

1. Loosen the piston housing hex nut on coil liquid tube.

Use TWO wrenches to avoid damage to the distributor

tubes.

2. Replace the existing piston with the new piston

3. Always use a new Teon O-ring

4. Re-assemble the housing and torque to 10-20 ft-lb

using TWO wrenches

65821003 / 40228K016 Issue 1810 Page 3 of 6

Figure 1. Changing an Orice

Expansion Valves (TXV)

Factory shipped coils with installed TXV are available. TXV

kits are also available to convert a piston-shipped coil to

a TXV coil; the kit part number is specic to the outdoor

model (see the outdoor unit technical specication).

For proper TXV installation, follow the installation

instruction provided with the TXV kit in addition to the

following procedure:

1. Loosen the piston housing hex nut on coil liquid tube.

Use TWO wrenches to avoid damage to the distributor

tubes.

2. Replace the existing piston with the new TXV

3. Always use a new Teon O-ring

4. Re-assemble the housing and torque to 10-20 ft-lb

using TWO wrenches

5. Connect the external equalizer tube to the equalizer

port on the suction line and tighten to 8 ft-lb

6. Attach the TXV bulb at the 10 to 2 o’clock position on

the suction line outside the cabinet no more than one

foot from the coil

7. Insulate the bulb

Figure 3. Condensate Drain

Figure 2. Metering Device Installation

Refrigerant Line Sets

• Line set size must be selected per the outdoor unit

instructions

• Brazed connections MUST be purged with nitrogen

during brazing

• Service valves MUST be wrapped with wet rag during

brazing

• Line sets MUST be sealed at all times until brazed to

prevent contaminants

• Suction line MUST be insulated

System Vacuum

After brazing and before releasing/adding charge into

the system, the system MUST be evacuated to at least

500 microns with a refrigeration vacuum pump. After

evacuation, shut off the pump and monitor the vacuum

gauge to ensure that the system is holding the vacuum.

When it is time to release the charge from the outdoor unit

into the system, always slowly open the suction service

valve rst before opening the liquid service valve.

65821003 / 40228K016Issue 1810Page 4 of 6

System Charging

The system MUST be charged per the outdoor unit

installation instructions.

Condensate Drain

Coils are equipped with multiple drain connections.

Determine the drain connections to be used and note the

difference between the primary (green) and secondary

(red) openings. Drain plugs are provided for all openings;

remove and discard the appropriate plugs with 1/2” drive

ratchet and verify that remaining plugs are tight (2.5 ft-lbs).

Attach drain line to pan with 3/4” male pipe thread PVC

ttings. Hand tight is adequate - do not over tighten and

do not reduce drain line size.

Route drain line(s) so they will not be exposed to freezing

temperatures and do not interfere with accessibility to

the coil, air handling system or lter. The drain should be

pitched downward 1” per 10” with a 2” trap as close to

the coil as possible. If line makes a second trap, or has

an extended run before termination, a vent tee should be

installed after the trap closest to the pan. See Figure 3.

If the coil is located in or above a living space where

damage may result from condensate overow, a separate

3/4” drain must be provided from the secondary drain

connection. Run this drain to a place in compliance with

local installation codes where it will be noticed when unit

is operational. Condensate owing from the secondary

drain indicates a plugged primary drain. Prime the trap

with water. Test line for leaks. Test water ow with unit in

operation. An auxiliary drain pan should also be installed

under the unit as specied by most local building codes.

Upow Installation

FURNACE

Remove

Horizontal

Drain Pan

Air Flow

Figure 4. Upow Installation

• When the indoor coil is installed with a furnace unit, it

is highly recommended to use the same width coil as

the furnace

• Install coil with slight slope towards the drain connection

• Remove auxiliary (horizontal) drain pans from the coil

cabinet for upow installation

WARNING

The drain pan is made of material that can withstand

450°F. However, the clearance between the furnace and

the drain pan must be 4 inches for an oil furnace or 2

inches for a gas furnace.

• Apply foil face tape around the entire cabinet to prevent

air leaks and insulate the suction line

Downow Installation

Remove

Horizontal

Drain Pan

Air Flow

FURNACE

Figure 5. Downow Installation

• When the indoor coil is installed with a furnace unit, it

is highly recommended to use the same width coil as

the furnace

• Install coil with slight slope towards the drain connection

• Remove auxiliary (horizontal) drain pans from the coil

cabinet for downow installation

• Airow face velocity above 350 ft/min is not

recommended due to potential for water blow-off

WARNING

Water shields must be installed on all downow

applications on the inside of the drain pan on both sides

of the coil (downow kit).

IMPORTANT

Use foil face tape to secure the top edge of the coil

insulation to the cabinet to prevent delamination and air

ow blockage.

65821003 / 40228K016 Issue 1810 Page 5 of 6

• Apply foil face tape around the entire cabinet to

prevent air leaks

Water

Shields

Evaporator Coil

Figure 6. Water Shield Installation

Horizontal Installation

• For installation above ceilings, a secondary drain

pan with overow switch must be installed and must

comply with local codes

• When the indoor coil is installed with a furnace unit, it

is highly recommended to use the same width coil as

the furnace

• Install coil with slight slope towards the drain

connection and level with the furnace

• Do not remove auxiliary (horizontal) drain pans from

the coil cabinet. Position the drain pan according to the

horizontal position installation (right or left position). It

is most preferred and most efcient that the outlet of

the furnace be facing the bottom of the coil instead of

the top of the coil

• Install splash guard at the coil outlet as shown

(included with horizontal coils)

• Air ow should be set for 350 CFM per ton or as rated

for the matched system

Air Flow

Figure 7. Horizontal Left Installation

Air Flow

Figure 8. Horizontal Right Installation

Horizontal Conversion (Right or Left)

See Figure 10

• Remove front panels (1) and slide coil outside the

cabinet

• Remove horizontal pan (3) and re-install on the

opposite side

• Remove top plate (4) and reverse the position of the

diverter plate (5) as shown. This will allow the water to

slope downwards towards the middle of the coil inside

the horizontal drain pan

2 & 9

Note: Access panel may

need to be notched

to allow access to

suction header

Figure 10. Horizontal Conversion

65821003 / 40228K016Issue 1810Page 6 of 6

CAUTION

The water diverter plate (5) must be positioned

downwards facing the direction of air ow. Failure to

do so can cause water blow off and possible structure

damage.

Slope

down

Air Flow

Figure 9. Position Water Diverter Plate

• Replace the top plate (6) and seal any air gaps

• Cut front ange (7) and fold back to allow access to

the horizontal drain connections

• Install the coil back into the cabinet and the piping

panel (10)

• Knock out new access openings for the drain lines (11)

• Install the door and seal any unused holes (8 & 12) to

prevent air leakage

• Install splash guard at the coil outlet as shown to

prevent water blow off

Splash Guard Installation

Fasten splash guard to duct flanges with (4)

sheet metal screws, (2) on each side. Screws

can be installed from the inside or outside.

Angle splashguard to ensure

proper water drainage back

into horizontal drain pan.

Splashguard should

overlap the horizontal

drain pan by at least 4”.

4” min.

Figure 11. Splash Guard Installation

• Apply foil face tape around the entire cabinet to prevent

air leaks and insulate the suction line

Allied EC1P Installation guide

Brand: Allied

Model: EC1P

Type: Installation guide

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Allied EC1P Installation guide

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